Cumulative sum of primes p such that 2^p - 1 is a Mersenne prime.

Terms

a(0) =2a(1) =5a(2) =10a(3) =17a(4) =30a(5) =47a(6) =66a(7) =97a(8) =158a(9) =247a(10) =354a(11) =481a(12) =1002a(13) =1609a(14) =2888a(15) =5091a(16) =7372a(17) =10589a(18) =14842a(19) =19265a(20) =28954a(21) =38895a(22) =50108a(23) =70045a(24) =91746a(25) =114955a(26) =159452a(27) =245695a(28) =356198a(29) =488247